DocumentCode :
3326219
Title :
A new noise reduction method of speech signal with running spectrum filtering
Author :
Fujioka, Kazuma ; Miyanaga, Yoshikazu
Author_Institution :
Div. of Media & Network Technol., Hokkaido Univ., Sapporo, Japan
fYear :
2004
fDate :
18-19 Nov. 2004
Firstpage :
173
Lastpage :
176
Abstract :
We propose a new noise reduction method for speech signals using running spectrum filtering (RSF) and new musical noise reduction. RSF, which uses FIR filtering, is realized in the modulation frequency domain and it can eliminate noise components effectively using running spectra of speech. Since some musical noise happens on RSF, a new post processing is also introduced for musical noise reduction. The report shows that the proposed method is well applied for speech enhancement. It also indicates that segmental SNR is improved and audibility evaluation shows a higher score than conventional processing.
Keywords :
FIR filters; acoustic noise; random noise; signal denoising; spectral analysis; speech enhancement; FIR filter; modulation frequency domain; musical noise reduction; post processing; running spectrum filtering; speech enhancement; speech signal noise reduction; Acoustic noise; Additive noise; Finite impulse response filter; Frequency modulation; Information filtering; Information filters; Noise reduction; Speech enhancement; Speech recognition; Working environment noise;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Intelligent Signal Processing and Communication Systems, 2004. ISPACS 2004. Proceedings of 2004 International Symposium on
Print_ISBN :
0-7803-8639-6
Type :
conf
DOI :
10.1109/ISPACS.2004.1439039
Filename :
1439039
Link To Document :
بازگشت